CC2500-RTR1 datasheet(16/99 Pages) TI1

16 / 99 page

CC2500

SWRS040C

Page 16 of 89

Pin #

Pin Name

Pin Type

Description

SCLK

Digital Input

Serial configuration interface, clock input

(GDO1)

Digital Output

Serial configuration interface, data output.

Optional general output pin when CSn is high

GDO2

Digital Output

Digital output pin for general use:

 Test signals

 FIFO status signals

 Clear Channel Indicator

 Clock output, down-divided from XOSC

 Serial output RX data

DVDD

Power (Digital)

1.8 - 3.6 V digital power supply for digital I/O’s and for the digital core

voltage regulator

DCOUPL

Power (Digital)

1.6 - 2.0 V digital power supply output for decoupling.

NOTE: This pin is intended for use with the

CC2500 only. It can not be

used to provide supply voltage to other devices.

GDO0

(ATEST)

Digital I/O

Digital output pin for general use:

 Test signals

 FIFO status signals

 Clear Channel Indicator

 Clock output, down-divided from XOSC

 Serial output RX data

 Serial input TX data

Also used as analog test I/O for prototype/production testing

CSn

Digital Input

Serial configuration interface, chip select

XOSC_Q1

Analog I/O

Crystal oscillator pin 1, or external clock input

AVDD

Power (Analog)

1.8 - 3.6 V analog power supply connection

XOSC_Q2

Analog I/O

Crystal oscillator pin 2

AVDD

Power (Analog)

1.8 - 3.6 V analog power supply connection

RF_P

RF I/O

Positive RF input signal to LNA in receive mode

Positive RF output signal from PA in transmit mode

RF_N

RF I/O

Negative RF input signal to LNA in receive mode

Negative RF output signal from PA in transmit mode

AVDD

Power (Analog)

1.8 - 3.6 V analog power supply connection

AVDD

Power (Analog)

1.8 - 3.6 V analog power supply connection

GND

Ground (Analog)

Analog ground connection

RBIAS

Analog I/O

External bias resistor for reference current

DGUARD

Power (Digital)

Power supply connection for digital noise isolation

GND

Ground (Digital)

Ground connection for digital noise isolation

Digital Input

Serial configuration interface, data input

Table 13: Pinout Overview

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